These clamps are used to attach tarps, shade, greenhouse film, or netting to pipe. Some applications may include greenhouses, cold frames and row covers. Keep your plants better protected in wind and snow. Material: ABS+PC. It is durable and sturdy, not easy to break, rust and more resistant to rot, so you can use it for long time. #32: length 10.5cm,fit for outer diameter 31-33mm round pipe Include 20pcs Clamps. These garden clips are the perfect accessory for DIY garden greenhouses, You can adjust the clip anywhere according to your requirements. Brand New and High Quality